Which is more fun, Hailuogou or Mugecuo?

We went to Mugecuo and Hailuogou for a few days and came back. Both places are good, but I think it's more fun to go to Hailuogou now, because it's good to soak in hot springs, see snow peaks and see glaciers. It is said that the scenery in Mugecuo in summer and autumn is much better than it is now. We signed up at the airport travel website, using 520 yuan/person.